Since the lower bolt holes of a truck transmission are threaded, you'll need to use bolts and nuts there when installing the 5 speed. Some people use an aluminum spacer between the T-5 and the bell housing to avoid having to shorten the pilot bearing snout and lengthen the clutch splines on the input shaft. A fine spline clutch disc is also required unless you swap to a Jeep input shaft that has the same splines as a stovebolt clutch.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!